The chemical change process whereby a molecule breaks down into simpler molecules or elements is called:

decomposition

endothermic

exothermic

a phase change

The amount of energy it takes to remove an electron from an atom is

Which one of these is an example of a chemical change.? A - water evaporating from a puddle B - cloth tearing when pulled C - wood forming sawdust when cut D - bread baking in an oven

The safe dosage of the IV antibiotic ceftriaxone for children weighing more than 2.0 kg is 60. mg per kilogram of body weight. Suppose a pediatric nurse has available 1.5 L of a ceftriaxone solution with a concentration of 0.030 g/mL.

True or False. 1. All gaseous mixtures are solutions. 2. Solid Solutions are common. 3. Vapor pressure of water is not affected by the amount salt added. 4. Alloys are examples of solid solutions. 5. Crystallization is a good way to purify solids. 6.

What caused the temperature of the sand to change?

What is the name of the compound Sr3N2?

The water softener discussed here relies on precipitation softening also known as ion exchange. based o hte reactants used, what ions would remain in the softened water thaat would be consumed buy the homeowners

What would be the best technique to separate a soluble solid from a solution, like separating salt from a mixture of salt water?

What are metalloids used for

Which scientist developed the quantum mechanical model of the atom? a. Albert Einstein c. Niels Bohr b. Erwin Schrodinger d. Ernest Rutherford